Automatic paste tube closure



J.. 2, H94. H w. G. ARNOLD 2,185,323

AUTOMATIC PASTE TUBE CLOSURE Filed Nov. 29, 1938 uNvEN'roR' WLHLMGAYMJCL Attorney rammed Jan. 2, 1940 2,185,323

UNTED STATES RATS-ENT FFHCE AUTOMATIC PASTE TUBE CLOSURE William Graydon Arnold, Shaunavon, Saskatchewan, Canada Application November 29, 1938, Serial No. 243,001

2 Claims. (Cl. 22d- 60) This invention relates to improvements in an low of the member I7 and is compressed as the automatic paste tube closure. Its primary object closure is forced upward. When the pressure is being to provide means to automatically open and released from the tube the resilient retraction close the outlet aperture in the neck of a collapsimember i I having compressed air therein forces ble paste tube. the said closure down again to its normal posi- 5 A further object of the invention is to provide tion to close the aperture. a device as set forth, wherein the closure means In the modication shown in Fig. 4 a helical is automatically opened by the pressure of the spring I8 is inserted within the member I'I to ascontents being forced out and at the same time a sist the same in forcing the closure member 110 retraction device is compressed and which autodownward. This type is more applicable for use l) matically retracts the closure means where the with tubes containing stiffer forms of paste. pressure on the tube is released. From the foregoing it will be seen that the With these and other objects in View that may device is automatic in operation and is actuated appear while the description proceeds the invenby pressure on the tube when it is desired to force tion consists in the novel construction and arpaste therefrom for use. l5 rangement of parts as hereinafter more speci` It is believed that the construction and advancally set forth, claimed and shown in the accom- `tages of the structure shown may be apparent panying drawing forming part of this application from the foregoing paragraphs taken in conjuncand in which: tion with the accompanying drawing without fur- Fig. l is a perspective View of a collapsible tube ther detailed description. 20 as fitted with the improved cap. While the preferred embodiment of the inven- Fig. 2 is an enlarged sectional view through my tion has been disclosed it is understood that invention with the closure in normal position. minor changes in the details of construction, Fig. 3 is a similar View with the closure memcombination and arrangement of co-operating ber in the open position. elements may be resorted to within the scope of 25 Fig. 4 is a further sectional view of the cap and what is claimed without departing from the spirit closure showing a modified retraction means. of the invention.

Referring more in detail to the drawing in I claim: which similar reference characters designate corl. In an automatic closure for a collapsible responding parts throughout the several views it tube as described, comprising a tube having a 30 will be seen that the invention comprises a colneck and an apertured top formed thereon, said lapsible tube IE having a neck II formed thereon, neck having a discharge opening formed therein, said neck being closed at the top I2 with a small a closure therefor consisting of a circular memair aperture I3 formed therein. An outlet aperber having an upstanding collar thereon, said ture ill is provided in the side of the neck approximember slidably mounted within said neck and 35 mately midway of its length. arranged to normally close said discharge open- 'I'he closure device consists of a circular meming, and a conical shaped resilient member posiber I5 having a collar I5 formed thereon. Said tioned between said closure and said top, and closure is arranged to slide smoothly within the spring means within said resilient member, subneck of the tube with the collar toward the top. stantially as set forth. 40

A hollow conical member I'I of resilient material 2. An automatic closure for collapsible tube is positioned between the circular member and comprising a tube having a neck provided with a the top of the tube with the baseI thereof resting discharge opening in the wall thereof and an air against the said circular member within the collar vent in the top, a closure disk slidably mounted and the point normally bearing against the inwithin said neck and arranged to normally close 45 side of the top. The member I'I normally retains said discharge opening, and a hollow cone of rethe closure member in the downward position in silient material positioned between said closure which the collar I6 covers the aperture I4 to and the top of the neck, the base of said cone close the same. When the tube is compressed being seated on said closure disk and its apex the paste forces the closure upward against the being in contact with the top of the neck.

resilient member I'I. Air is allowed into the hol- WILLIAM GRAYDON ARNOLD. 

